Casting during shift operation

[Ranjan Sarangi]

As you know during shift operation of short variable, first it is converted to int. The result is also int. The ideal statement should look like : s = (short) (s >> 10); However I see something strange below.
short s=-1;
s >>>= 10 ; // this does not need explicit cast.
//s = s>>> 10 ; // but this does need cast.
Why? Any body.

[daryl olson]

short s = -1;
s >>>= 10;
There is an implied cast used during the compiling as follows:
short s = -1;
s = (short) (s >>> 10);
Same goes for:
short s = 2;
s += 10;
or the other compond operators.